skos:altLabel | - San Francisco
- O'Shaughnessy Dam
- '''Hetch Hetchy Reservoir'''
- Hetch Hetchy Aqueduct
- Hetch Hetchy Project
- Hetch Hetchy Reservoir
- Hetch Hetchy Valley
- Hetch Hetchy water system
- Hetch Hetchy#Hetch Hetchy Project
- Hetch-Hetchy
- Hetch-Hetchy Reservoir
- Hetch-Hetchy water system
- the Hetch Hetchy Project
|